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This Rust programming language tutorial based on our experience at Apriorit will provide you with a deep look into Rust features and their practical application. This four-article series will be useful for programmers who wish to know more about the options that the Rust language provides.
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A Love Letter to Rust Macros Tue, Apr 9, 2019. It’s no secret to people who know me that I’m a huge fan of the Rust programming language.I could talk for hours about the brilliance of the ownership system, my irrational longing for natively compiled languages without garbage collection, or the welcoming community that finally moved me to take a more active part in open source projects.
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Implement Debug trait for large array type rust,traits I gather that Rust provides Debug impl's for arrays size 32 and smaller. I also gather that I could implement Debug on a larger array by simply using write! with a very long format specifier.
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array_tool. Array helpers for Rust. Some of the most common methods you would use on Arrays made available on Vectors. Polymorphic implementations for handling most of your use cases.
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Vec is the cornerstone of Rust's std library collection and has extremely efficient code written so that LLVM can easily optimize its usage Rust's allocator is also incredibly well optimised so the performance penalties from bins management and system allocations (and the locks in a multi-threaded environment) are quite well amortized on average.
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Sep 15, 2019 · Rust - Display Contents of Array, Tuple, HashMap and Vector ... // We pass the reference to mny_vec and my_map to the tuple ... Rust IDE Plugin For Visual Studio Code ...
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Sep 18, 2019 · The biggest hurdle was the fact that an array in Rust has to have a fixed size, since the size of the array is part of its type. You either have to use a Vec (vector, resembling a variable size array) or provide different functions to call depending on the array size.
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Apr 07, 2020 · Section 1: Background We have been using asyncio for years to hide the IO latency. Major high-level programming languages – except C++, which is expect to have coroutine in C++20 – have proper support for both language syntax (programmability) and user space scheduling (functionality). It’s common believe that coroutine has much smaller overhead than the operating system scheduler, but ...
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Because the Rust documentation is so good, I won't say much about getting started with Rust. I've only tried installing and using Rust on Ubuntu 20.04 and I'm using VS Code with the rust-analyzer extension. First, let's create a new project. cargo new stochastic-logistic --bin
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Develop Rust programming skills from scratch and learn best practices for writing clear and concise code ... Vec vs. Slice vs. Array Shared Pointers with Rc and Arc
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Apr 07, 2020 · Section 1: Background We have been using asyncio for years to hide the IO latency. Major high-level programming languages – except C++, which is expect to have coroutine in C++20 – have proper support for both language syntax (programmability) and user space scheduling (functionality). It’s common believe that coroutine has much smaller overhead than the operating system scheduler, but ...

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In this example we will compare iterating through a (doubly) linked list vs. a vector. This case is well-known and mentioned in Rust’s LinkedList docs, in Rust’s std::collections docs and in Learn Rust With Entirely Too Many Linked Lists’ Public Service Announcement. The latter Public Service Announcement covers a lot of cases where ... У громадах Хмельницької області, де працює Компанія «Контінентал», щороку у грудні вихованці дитсадків та учні шкіл отримують набори солодких гостинців, аби день святого Миколая став для них насправді чарівним. arrays, with and without fixed size (e.g. [u8], [u8; 17]) structs, enums, closures, and other named types, possibly with their own set of type arguments; function types such as fn(&i32) -> u16; dyn traits; Basic types are all encoded via a single lower-case letter, like in the Itanium scheme. Collection of useful Rust code examples. Sorting Vectors Sort a Vector of Integers. This example sorts a Vector of integers via vec::sort.Alternative would be to use vec::sort_unstable which can be faster, but does not preserve the order of equal elements. Vec is the cornerstone of Rust's std library collection and has extremely efficient code written so that LLVM can easily optimize its usage Rust's allocator is also incredibly well optimised so the performance penalties from bins management and system allocations (and the locks in a multi-threaded environment) are quite well amortized on average. Vec is the cornerstone of Rust's std library collection and has extremely efficient code written so that LLVM can easily optimize its usage Rust's allocator is also incredibly well optimised so the performance penalties from bins management and system allocations (and the locks in a multi-threaded environment) are quite well amortized on average.


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Node worker threads with shared array buffers and Rust WebAssembly by Tigran Bayburtsyan; Crafting ARP packets to find a remote host's MAC address by Amos; Rust Dynamic Dispatching deep-dive by Marco Amann; duck typing in rust: trait vs type by Sarah Allen; RISC-V OS using Rust Chapter 7: System Calls by Stephen Marz; The 2020 Rust Event Lineup ...

  1. An immediate question is "Why Functional programming in Rust?". Rust's model is a different approach which solves many problems that FP solves. Accidental side effects don't normally happen in Rust and data are immutable by default. You're kind of forced to a modular and maintainable design too and risk-free concurrent execution comes easily. Rust is a highly capable programming language created by Mozilla & has managed to hit a sweet spot in the programming world. Today, Python or JavaScript might be the widely used programming language, but Rust is the most loved programming language according to the Stack Overflow survey.
  2. array_tool. Array helpers for Rust. Some of the most common methods you would use on Arrays made available on Vectors. Polymorphic implementations for handling most of your use cases.Sep 28, 2020 · Vectors, like lists or arrays in Haskell, contain many elements of the same type. It's important to note that Rust vectors store items in memory like arrays. That is, all their elements are in a contiguous space in memory. We refer to them with the parameterized type Vec in Rust. There are a couple ways to initialize them:
  3. Get a walkthrough of Rust's syntaxes and basic concepts Perform code testing and handle errors Become familiar with borrow checker and memory safety Understand string, str, vec, slice, and array Discover how to use dynamic types for polymorphism Use Serde to convert any data to any format
  4. Apr 07, 2020 · Section 1: Background We have been using asyncio for years to hide the IO latency. Major high-level programming languages – except C++, which is expect to have coroutine in C++20 – have proper support for both language syntax (programmability) and user space scheduling (functionality). It’s common believe that coroutine has much smaller overhead than the operating system scheduler, but ...
  5. 5×2 Array{Float64,2}: 0.868183 0.40017 0.0193721 0.631149 0.4029 0.053243 0.209878 0.116046 0.281436 0.811648
  6. Sum or Product of an Array in Rust 2014/11/11 I’ve been learning Rust (or “rustlang†for Google purposes – don’t even bother searching for “Rust on Windows†) and it has been more difficult than anticipated because of the shifting foundation of the language. Jan 21, 2019 · As part of brainstorming 2019 priorities, one of the things I’ve been contemplating is “when do people pick homogeneous tuples (or tuple-structs) instead of arrays?” We’re actually getting to a pretty good spot there, especially since fixed-length slice patterns stabilized in 1.26. The big difference that still exists is that the compiler understand disjoint borrows for tuples/structs ... Mar 08, 2018 · This type provides a dynamically resizeable array and is useful for collecting data for later processing. The VecDeque structure is similar to Vec, but you can insert it at both ends of the sequence. The LinkedList structure is similar to Vec, as well, but with it, you can split and append lists. For maps, you have the HashMap and BTreeMap ...
  7. In my previous article, I said I needed to stop thinking of Rust generics as Java generics, because in Rust, generic types are erased. Someone gently pointed out that they are also erased in Java, the difference was elsewhere. And so, let's learn the difference together. Java generics I learned Java first (a long, long time ago), and their approach to generics made sense to me at the time ...
  8. Rust syntax: if let and while let. TL;DR: if let is a fancy if condition. while let is a fancy while loop. They enter a codeblock if a destructuring assignment works. With the if let syntax you combine an if condition with a destructuring let assignment. Let’s unpack (pun intended) that sentence. The if condition
  9. Pointer values vs Pointer types One common cause of confusion in Miri is that being a pointer value and having a pointer type are entirely independent properties. By "pointer value", we refer to a Scalar::Ptr containing a Pointer and thus pointing somewhere into Miri's virtual memory. Pointer values vs Pointer types One common cause of confusion in Miri is that being a pointer value and having a pointer type are entirely independent properties. By "pointer value", we refer to a Scalar::Ptr containing a Pointer and thus pointing somewhere into Miri's virtual memory. In general, Vec's allocation details are very subtle — if you intend to allocate memory using a Vec and use it for something else (either to pass to unsafe code, or to build your own memory-backed collection), be sure to deallocate this memory by using from_raw_parts to recover the Vec and then dropping it.
  10. Get a walkthrough of Rust’s syntaxes and basic concepts Perform code testing and handle errors Become familiar with borrow checker and memory safety Understand string, str, vec, slice, and array Discover how to use dynamic types for polymorphism Use Serde to convert any data to any format Easily search through our library of generated procedural Rust maps and find the ideal seed for your server! vec_new: vec is stack ... However, after calling vec_push, this causes a resize to occur, freeing the old data and allocating a new array. Hence, ... Rust vs. OCaml. Instead, I decided to try to use Rust. I’ve read a lot about safe concurrency in Rust, but I’ve never tried it. I also wanted to learn what Rust’s new “async/await” feature was all about. This seemed like the perfect task for asynchronous Rust code. TL/DR: Here’s the code. The rest of this post will explain how it works.
  11. Sep 10, 2016 · For other use cases, Rust is still lacking. One such use case would be an OpenGL GUI, like CEGUI or nanogui. In wanting to help the community and the language, I opted to port nanogui to Rust, purely in Rust, without using bindings to C/C++. The project can be found here. T he usual start in Rust is known as fighting the borrow-checker period ...
  12. Two types: str is UTF-8-safe array, String is like Vec but UTF-8 safe. There's lots of automatic interconversion between stuff to try to make this mess right. You probably want to skip ahead to ch 17 (why?) and skim that. Book Example: Iron-GCD. Turn the command-line app into a webapp. There are a lot of neat web frameworks in Rust. Performance ...

 

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Rust arrays are pretty different from C arrays. For starters they come in statically and dynamically sized flavours. These are more commonly known as fixed length arrays and slices. As we'll see, the former is kind of a bad name since both kinds of array have fixed (as opposed to growable) length.V dnešním článku o jazyku Rust a knihovnách, které pro tento jazyk vznikly, se budeme zabývat knihovnou určenou pro práci s n-rozměrnými poli,… See full list on manishearth.github.io Sep 09, 2019 · Note that this feature is only available to loop.Trying to use break the same way in while or for results to compile-time errors. Using while The while loop is one of the most familiar constructs to anyone coming from Java, C/C++, C#, and other similar languages. In my previous article, I said I needed to stop thinking of Rust generics as Java generics, because in Rust, generic types are erased. Someone gently pointed out that they are also erased in Java, the difference was elsewhere. And so, let's learn the difference together. Java generics I learned Java first (a long, long time ago), and their approach to generics made sense to me at the time ... Dec 16, 2020 · Rust is such a system. – amos on his blog. Thanks to Joshua Nelson for the suggestion. Please submit quotes and vote for next week! This Week in Rust is edited by: nellshamrell, llogiq, and cdmistman. Discuss on r/rust « Previous: This Week in Rust 368 Next: This Week in Rust 370 » Note that Vec<T> has the kind type, just like Vec<i32>: even though T is a type parameter, Vec is still being applied to a type, just like not(x) still has the type bool even though x is a variable. A relatively uncommon feature of Rust is that it has two base kinds, whereas many languages which deal with higher-kindedness only have the base ... The other day, a friend of mine who is learning Rust asked if Rust is a pass-by-value or a pass-by-reference language. For the unfamiliar, pass-by-value means that when passing an argument to a function it gets copied into the new function so that the value in the calling function and the value in the called function are two separate values. Sum or Product of an Array in Rust 2014/11/11 I’ve been learning Rust (or “rustlang†for Google purposes – don’t even bother searching for “Rust on Windows†) and it has been more difficult than anticipated because of the shifting foundation of the language. Rust arrays are pretty different from C arrays. statically and dynamically sized flavours. These are more commonly known as fixed length arrays and slices. As we'll see, the former is kind of a bad name since both kinds of array have fixed (as opposed to growable) length. For a

Pointer values vs Pointer types One common cause of confusion in Miri is that being a pointer value and having a pointer type are entirely independent properties. By "pointer value", we refer to a Scalar::Ptr containing a Pointer and thus pointing somewhere into Miri's virtual memory. Mar 21, 2020 · It’s verbose but auto-completion works wonders when writing Rust code, since it’s all statically typed. I suggest using the Rust plugins for IntelliJ or VS Code. Once parsed I need to expand the border shorthand into it’s full version. So border: 1px solid brown becomes

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eg. you may have a 5D array on ndarray such as a 4x3x7x9x9 array - where the dimensionality 5 is a compile-time value but each of those 5 lengths (4, 3, 7, 9, 9) are runtime values, and you may have a 2D array on nalgebra such as 7x6 - where both the dimensionality 2 and each of those 2 lengths (7, 6) are compile-time values.

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Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.

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Performance difference between Vector and Array · Issue #40044 · rust-lang/rust · GitHub. On most platforms, the same Audio DSP algorithm runs slower when its buffer is backed by a Vector compared an Array. The difference in speed measured in favor of Array vs Vector is typically -10% to +60% Due to the large performance gain...

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arrays, with and without fixed size (e.g. [u8], [u8; 17]) structs, enums, closures, and other named types, possibly with their own set of type arguments; function types such as fn(&i32) -> u16; dyn traits; Basic types are all encoded via a single lower-case letter, like in the Itanium scheme. This includes built-in Rust standard library types like Vec<T> and HashMap<K, V>, as well as any structs or enums annotated with #[derive(Serialize)]. No-std support. As long as there is a memory allocator, it is possible to use serde_json without the rest of the Rust standard library. This is supported on Rust 1.36+. In this example we will compare iterating through a (doubly) linked list vs. a vector. This case is well-known and mentioned in Rust’s LinkedList docs, in Rust’s std::collections docs and in Learn Rust With Entirely Too Many Linked Lists’ Public Service Announcement. The latter Public Service Announcement covers a lot of cases where ... Because the Rust documentation is so good, I won't say much about getting started with Rust. I've only tried installing and using Rust on Ubuntu 20.04 and I'm using VS Code with the rust-analyzer extension. First, let's create a new project. cargo new stochastic-logistic --bin

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Node worker threads with shared array buffers and Rust WebAssembly by Tigran Bayburtsyan; Crafting ARP packets to find a remote host's MAC address by Amos; Rust Dynamic Dispatching deep-dive by Marco Amann; duck typing in rust: trait vs type by Sarah Allen; RISC-V OS using Rust Chapter 7: System Calls by Stephen Marz; The 2020 Rust Event Lineup ... arrays, with and without fixed size (e.g. [u8], [u8; 17]) structs, enums, closures, and other named types, possibly with their own set of type arguments; function types such as fn(&i32) -> u16; dyn traits; Basic types are all encoded via a single lower-case letter, like in the Itanium scheme. C Rust Swift Performance and Memory Comparison Introduction A few years ago, I did a programming language performance comparison and a memory management and automatic garbage collection comparison. C Rust Swift Performance and Memory Comparison Introduction A few years ago, I did a programming language performance comparison and a memory management and automatic garbage collection comparison. Implement Debug trait for large array type rust,traits I gather that Rust provides Debug impl's for arrays size 32 and smaller. I also gather that I could implement Debug on a larger array by simply using write! with a very long format specifier. Access time of vec vs array I have a collection of around 840 kB of u64 data and need to be able to read elements very quickly (It needs to be in L1 and at least L2 cache). This should fit reasonably in L2 cache of most modern cpus but I'm getting access times on the order of 16 ns for my i5 5257 processor.Here are the results ordered from worse to best (results not significant are not shown): benchmark variation (%) nlike_utf8 scalar ends with 15.8 sum nulls 512 13.5 struct_array_from_vec 1024 8.0 array_slice 512 6.9 nlike_utf8 scalar contains 5.7 cast timestamp_ns to timestamp_s 512 5.1 record_batches_to_csv 3.9 sort nulls 2^12 3.5 sort nulls 2 ... Sum or Product of an Array in Rust 2014/11/11. I’ve been learning Rust (or “rustlang†for Google purposes â€" don’t even bother searching for “Rust on Windows†) and it has been more difficult than anticipated because of the shifting foundation of the language. Much of what you find online is out-of-date ...Vec. Heap-allocated array-like object; ... A Rust str is like an array, except of UTF-8 text. A str is unsized, so it is really only useful in certain type declarations.

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More convenient way to work with strings in winapi calls. string,winapi,rust. In your situation, you always want a maximum of 255 bytes, so you can use an array instead of a vector. Performance difference between Vector and Array · Issue #40044 · rust-lang/rust · GitHub. On most platforms, the same Audio DSP algorithm runs slower when its buffer is backed by a Vector compared an Array. The difference in speed measured in favor of Array vs Vector is typically -10% to +60% Due to the large performance gain...

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A Love Letter to Rust Macros Tue, Apr 9, 2019. It’s no secret to people who know me that I’m a huge fan of the Rust programming language.I could talk for hours about the brilliance of the ownership system, my irrational longing for natively compiled languages without garbage collection, or the welcoming community that finally moved me to take a more active part in open source projects. Godot uses a shading language similar to GLSL ES 3.0. Most datatypes and functions are supported, and the few remaining ones will likely be added over time. If you are already familiar with GLSL, the Godot Shader Migr... Jun 10, 2017 · Convert each digit and put it into the array but moving a pointer forwards and wrapping at the end of the array. The array is sized as the window. Calculate the product from the contents of the array. Continue until all the digits are consumed. So this has the advantage over the functional version of only doing one pass through the digits. Oct 19, 2019 · I then ran the code for double precision arrays a,b,c of length 256 until 16777216. The purpose of this is to measure the performance changes as we exceed different levels of cache. Naive Rust Implementation. I learned some basics of Rust and came up with the following implementation that does the equivalent calculation and timing of it: The other day, a friend of mine who is learning Rust asked if Rust is a pass-by-value or a pass-by-reference language. For the unfamiliar, pass-by-value means that when passing an argument to a function it gets copied into the new function so that the value in the calling function and the value in the called function are two separate values.

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let buf: Vec<u8> = Vec::with_capacity(1000000); This creates a simple but fast vector. There is also the unstable alloc::heap:: allocate if you want to go more low-level. The other day, a friend of mine who is learning Rust asked if Rust is a pass-by-value or a pass-by-reference language. For the unfamiliar, pass-by-value means that when passing an argument to a function it gets copied into the new function so that the value in the calling function and the value in the called function are two separate values.

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A vector is nothing but a type of an array whose size can be changed at the run time. Vector instances are created to declare a vector and then is initialized. Vector in Rust Oct 19, 2019 · I then ran the code for double precision arrays a,b,c of length 256 until 16777216. The purpose of this is to measure the performance changes as we exceed different levels of cache. Naive Rust Implementation. I learned some basics of Rust and came up with the following implementation that does the equivalent calculation and timing of it: Homu queue - rust. Create a rollup Synchronize. This will create a new pull request consisting of 0 PRs. A rollup is useful for shortening the queue, but jumping the ... A flat array: I wrap this with a struct, using traits to simulate a 2-dimensional array access. A single vector: See above, but with a single vector, each terrain map can be differently sized. A vector of vectors: This is closest to a 2-dimensional map. Each X has a corresponding Y vector. So cell(3, 2) is "element 2 in vector 3". What is your opinion?

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This will create a new pull request consisting of 0 PRs.. A rollup is useful for shortening the queue, but jumping the queue is unfair to older PRs who have waited too long. arrays, with and without fixed size (e.g. [u8], [u8; 17]) structs, enums, closures, and other named types, possibly with their own set of type arguments; function types such as fn(&i32) -> u16; dyn traits; Basic types are all encoded via a single lower-case letter, like in the Itanium scheme. the compiler knows the size (in bytes) of some types at compile time: primitives, structs, enums, fixed-size arrays. Rust can use thin pointers to reference those others are only known at runtime: DSTs. Rust uses fat pointers (pointer + length / pointer + vtable) for slices ( &[T] ) and Trait Objects ( &Trait ) respectively &str vs String Godot uses a shading language similar to GLSL ES 3.0. Most datatypes and functions are supported, and the few remaining ones will likely be added over time. If you are already familiar with GLSL, the Godot Shader Migr... Jun 18, 2020 · Once you properly installed Rust (which gives you rustc, the Rust compiler, and cargo, the Rust package manager), everything I needed in VSCode was a proper font with neat ligatures and a couple of plugins: Rust, crates, Better TOML, Bracket Pair Colorizer 2. Hello Rust eg. you may have a 5D array on ndarray such as a 4x3x7x9x9 array - where the dimensionality 5 is a compile-time value but each of those 5 lengths (4, 3, 7, 9, 9) are runtime values, and you may have a 2D array on nalgebra such as 7x6 - where both the dimensionality 2 and each of those 2 lengths (7, 6) are compile-time values.

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Peter, BSc (with distinction), is a professional Python/Django developer who has also written an exotic processor emulator in Rust. In the beginning, there was C. In C, there are three types of memory allocation: static, automatic, and dynamic. Static variables are the constants embedded in the ... Convert array of u32 to Vec<u8> in Rust. Hot Network Questions Hole in granite countertop for kitchen faucet slightly small Did any European computers use 10-line ... Performance of Rust vector (`Vec<T>`) versus array , Currently I'm using a Vec<Vec<u64>> or a vector of 64 vectors and I'm wondering if, because vectors are allocated on the heap, that my performance would be Arrays and Vectors. Rust arrays are pretty different from C arrays. Rust Macros Declarative Macros Procedural Macros (of which there are three kinds)! Goal: understand what Rust macros are and how they work. ! This is one of the strangest concepts we’ll cover (yes, maybe even weirder than nonblocking I/O and futures). Please ask questions.

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Mar 08, 2018 · This type provides a dynamically resizeable array and is useful for collecting data for later processing. The VecDeque structure is similar to Vec, but you can insert it at both ends of the sequence. The LinkedList structure is similar to Vec, as well, but with it, you can split and append lists. For maps, you have the HashMap and BTreeMap ... Rust arrays are pretty different from C arrays. statically and dynamically sized flavours. These are more commonly known as fixed length arrays and slices. As we'll see, the former is kind of a bad name since both kinds of array have fixed (as opposed to growable) length. For aOther Rust array/matrix crates. Of the array/matrix types in Rust crates, the ndarray array type is probably the most similar to NumPy's arrays and is the most flexible. However, if your use-case is constrained to linear algebra on 1-D and 2-D vectors and matrices, it might be worth considering other crates:Jun 10, 2017 · Convert each digit and put it into the array but moving a pointer forwards and wrapping at the end of the array. The array is sized as the window. Calculate the product from the contents of the array. Continue until all the digits are consumed. So this has the advantage over the functional version of only doing one pass through the digits.